/*
 * Project it.battlehorse.rcp.tools.dbbase
 * Created on Nov 20, 2005
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * 
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 *
 * A copy of the LGPL is available also at
 * http://www.gnu.org/copyleft/lesser.html
 * 
 */ 
package it.battlehorse.rcp.tools.dbbase;

import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.jface.resource.ImageRegistry;
import org.eclipse.swt.graphics.Image;
import org.eclipse.ui.plugin.AbstractUIPlugin;
import org.osgi.framework.BundleContext;

/**
 * The Activator class for the DbBase plugin 
 * 
 * @author battlehorse
 * @since Nov 20, 2005
 */
public class DbBaseActivator extends AbstractUIPlugin {

	//The shared instance.
	private static DbBaseActivator plugin;
	
	/**
	 * The constructor.
	 */
	public DbBaseActivator() {
		plugin = this;
	}

	/**
	 * This method is called upon plug-in activation
	 */
	@Override
	public void start(BundleContext context) throws Exception {
		super.start(context);			
	}

	/**
	 * This method is called when the plug-in is stopped
	 */
	@Override
	public void stop(BundleContext context) throws Exception {
		super.stop(context);
		plugin = null;
	}

	/**
	 * Returns the shared instance.
	 */
	public static DbBaseActivator getDefault() {
		return plugin;
	}

	/**
	 * Returns an image descriptor for the image file at the given
	 * plug-in relative path.
	 *
	 * @param path the path
	 * @return the image descriptor
	 */
	public static ImageDescriptor getImageDescriptor(String path) {
		return AbstractUIPlugin.imageDescriptorFromPlugin("it.battlehorse.rcp.tools.dbbase", path);
	}	
	
	/**
	 * Returns the image which is associated with a given database
	 * 
	 * @param dbConfigId the database id
	 * @param desc the image descriptor
	 * @return the associated image
	 */
	public Image getDatabaseImage(String dbConfigId, ImageDescriptor desc) {
		ImageRegistry reg = this.getImageRegistry();
		Image im = reg.get("database." + dbConfigId);
		if (im == null) {
			reg.put("database." + dbConfigId, desc);
			im = reg.get("database." + dbConfigId);
		}
		
		return im;				
	}

}
